Journal
TRIBOLOGY INTERNATIONAL
Volume 118, Issue -, Pages 314-328Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2017.10.001
Keywords
Ni-MoS2 nanosheets; Nanolubricants; Antiwear; Tribo-interfaces
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In this study, the tribological behaviour of Ni-promoted MoS2 (Ni-MoS2) nanosheets were investigated using a four ball wear tester according to ASTM D4172 standard. The Ni-MoS2 nanosheets were chemically exfoliated in two steps, namely ultrasonication and simple reflux techniques. The physicochemical characteristics confirm that the obtained Ni-MoS2 nanosheet was well exfoliated and have excellent dispersibility. Base oil containing 0.5 wt% Ni-MoS2 nanosheets significantly enhances the antiwear property (40-50%) and slightly reduces the friction coefficient (15-20%) between the tribo-interfaces, due to its small size and surface modifying behaviour compared to base oil. Thus, the work augments the potential applications of Ni-MoS2 nano-additives in automotive industries.
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